Page "about:" removed in Firefox 59?
For many years, opening "about:" (without quotes, of course) URL in Firefox displayed a page with logo, version, user-agent, etc. But after upgrading from 58.0.2 to 59.0.2, I get an "Invalid URL" error when trying to open this page. Is this some bug or it was intentionally removed?
PS: about:mozilla, about:robots, etc work fine, problem only with about: